ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-84313

Nginx UI is a web user interface for the Nginx web server.

Published Oct 12, 2026 · catalog updated Oct 15, 2026 · Nginx UI is a

Check if you run it

No confirmed exploitation is on record for CVE-2026-84313. EPSS is 0.43%. Act only if a listed version of Nginx UI is a is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Nginx UI is a).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.43%
Remediation
Advisory link
Affected products
Go Nginx-UI

## Summary Endpoints that bind a TOTP secret ( ) or register a WebAuthn passkey ( ) for the *current* user require only a valid JWT. There is no current-password re-prompt and the routes are explicitly registered **outside** the group. With only a stolen JWT, an attacker can attach their own second factor to the victim's account, surviving any subsequent password rotation and locking the legitimate user out. ## Details — note the routes registered *before* the secure-session group: ( ) only refuses if is already ; for any victim who has never enabled TOTP it accepts an attacker-supplied and pair (the validator only checks that the passcode is a valid TOTP for the supplied secret — i.e., the attacker proves they know the secret they are submitting): ( ) is structurally identical and additionally has *no* "already enrolled" guard — an attacker can register multiple passkeys to the victim. ## Proof of Concept Now whenever the legitimate user (or anyone) logs in to that account, the second factor must be supplied from the *attacker's* authenticator. The passkey variant follows the same pattern: then with the attacker's WebAuthn authenticator. The route is also outside . ## Impact * Persistent account takeover surviving the victim's password reset. * Combines trivially with any of: stolen JWT, the bypass, the missing-role-model privilege escalation, and the weak recovery-code generation. ## Patches — move enrolment routes inside the secure-session group: This patch alone is **not sufficient** — the middleware is a no-op for non-OTP users (separate advisory). Both must be patched together. Additionally, require the user's current password in the request body for these mutations (mirroring at ). ## Workarounds None reliable. Operators should monitor the table for unexpected values and the table for unexpected rows. ## Credits Vishal Shukla ([@shukla304](https://github.com/shukla304)) and Sechub.dev AI Agent.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Go Nginx-UI0 → 1.9.10-0.20260703131214-23d1934099b0

How to fix CVE-2026-84313

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-84313. EPSS is 0.43%. Act only if a listed version of Nginx UI is a is installed.

Which versions are affected?

Compare what you have installed with Nginx-UI 0 → 1.9.10-0.20260703131214-23d1934099b0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-287: Improper Authentication; CWE-306: Missing Authentication for Critical Function. EPSS 0.43%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Nginx security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 12, 2026 · NIST NVD

    Detected

    Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, POST /api/otp_enroll and POST /api/finish_passkey_register are registered outside RequireSecureSession and accept a normal authenticated session without verifying the current password. An attacker with a stolen JWT can bind an attacker-controlled TOTP secret when the victim has not already enabled TOTP, or can register an a

  2. Oct 15, 2026 · NIST NVD

    Updated

    Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, POST /api/otp_enroll and POST /api/finish_passkey_register are registered outside RequireSecureSession and accept a normal authenticated session without verifying the current password. An attacker with a stolen JWT can bind an attacker-controlled TOTP secret when the victim has not already enabled TOTP, or can register an a

  3. Oct 15, 2026 · GitHub Advisory Database

    Fix available

    Nginx-UI fixed in 1.9.10-0.20260703131214-23d1934099b0

  4. Oct 15, 2026 · GitHub Advisory Database

    Fix available

    Nginx-UI fixed in 1.9.10-0.20260703131214-23d1934099b0

  5. Oct 15, 2026 · GitHub Advisory Database

    Updated

    ## Summary Endpoints that bind a TOTP secret ( ) or register a WebAuthn passkey ( ) for the *current* user require only a valid JWT. There is no current-password re-prompt and the routes are explicitly registered **outside** the group. With only a stolen JWT, an attacker can attach their own second factor to the victim's account, surviving any subsequent password rotation and locking the legitimat

Sources

  • CVE.orgVulnerability recordCVE-2026-84313

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-84313

    30-day exploitation probability 0.4%

    first.org
  • GitHub Advisory DatabasePackage advisoryGHSA-gfrc-g87h-7h5w

    GitHub Advisory Database record mirrored by OSV.

    github.com
  • NIST NVDVulnerability recordCVE-2026-84313

    Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, POST /api/otp_enroll and POST /api/finish_passkey_register are registered outside RequireSecureSession and accept a normal authenticated session without verifying the current password. An attacker with a s

    nvd.nist.gov
  • OpenSSF OSV / OSV ScannerPackage advisoryGHSA-gfrc-g87h-7h5w

    Nginx UI: TOTP / passkey enrolment requires no re-authentication, enabling persistent account takeover

    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.